A lot of people send theirs off to this company. To my knowledge they are the same part number.
Cadillac LED Replacement 3rd Brake Light, Third Brakelights For Escalade, ESV, Escalade EXT, Avalanche LTZ, Chrysler Crossfire, 2010-2011 SAAB 9-5, 2015-2019 GMC Yukon, Yukon Denali Tail Light Repair